Swimming pool leaf trap

ABSTRACT

A portable leaf trap for use with swimming pools comprising a dome-like housing, perforate means affixed to the housing, a flexible base member extending outwardly from the housing, and lift means. An opening is provided in the side of the housing to provide communication between the outside of the housing and an interior defined by the perforate means and the housing inner surface. The leaf trap is adapted to be positioned over a swimming pool drain upon the floor of the pool with leaves and the like entering the trap interior through said opening. The lifting element is affixed to the perforate means in the vicinity of said opening and offset with respect to the center of gravity of the trap. When an upwardly directed force is applied to the lifting element, the leaf trap tends to pivot therearound thus trapping the leaves and the like within the interior at a location remote from said opening.

States Patent Pansini [541 SWIMMING POOL LEAF TRAP [72] Inventor: Andrew L. Pansini, 180 Los Cerros Drive,

Greenbrae, San Rafael, Calif. 94904 [22] Filed: Feb. 11, 1970 [21] Appl. No.: 10,385

3,378,858 4/1968 .lacuzzi....

. ..2l0/l66X Primary Examiner-Samih N. Zaharna Assistant ExaminerFrederick F. Calvetti Att0rneyNaylor & Neal 5 ABSTRACT A portable leaf trap for use with swimming pools comprising a dome-like housing, perforate means afiixed to the housing, a flexible base member extending outwardly from the housing, and lift means. An opening is provided in the side of the housing to provide communication between the outside of the housing and an interior defined by the perforate means and the housing inner surface The leaf trap is adapted to be positioned over a swimming pool drain upon the floor of the pool with leaves and the like entering the trap interior through said opening. The lifting element is affixed to the perforate means in the vicinity of said opening and offset with respect to the center of gravity of the trap. When an upwardly directed force is applied to the lifting element, the leaf trap tends to pivot therearound thus trapping the leaves and the like within the interior at a location remote from said opening.

4 Claims, 4 Drawing Figures PATENTEDJUH 6 I972 INVENTOR. BYANDREW L. PANS/Nl 724W M ATTORNEYS SWIMIVIING POOL LEAF TRAP BACKGROUND OF THE INVENTION The present invention relates to equipment for the maintenance of swimming pools, and more particularly, to a portable trap for the removal of leaves and the like from said pools.

In the cleaning of swimming pools increasing use has been made of automatic swimming pool cleaners which incorporate mechanisms adapted to travel in a random manner over the bottom and side walls of the pool. Examples of such devices may be seen with reference to my prior U.S. Pat. Nos. 3,032,044 of May 1, 1962, and 3,392,738 ofJuly 16, 1968. In these devices random movement and/or cleaning are effected by means of one of more water discharge nozzles which are operatively associated with flexible conduit means. For the proper operation of these devices it is quite important that no foreign obstructions be provided in the swimming pool which would tend to catch them, thereby tending to impede their random movement or halt such movement altogether.

The above-noted prior art cleaning devices are adapted to remove accumulated scum and dirt from the side walls and bottom of a pool, this material being subsequently removed from the pool by suitable drain means. Quite often, a pool will also contain additional relatively large matter such as leaves and the like which may clog the pool drain. To prevent this traps have been devised for straining out this latter material from the water being drained and trapping same for subsequent removal. Such leaf trap arrangements, however, do not readily lend themselves to random movement pool cleaners since they are often large and complex in construction, tending to impede or halt movement of such cleaners.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a portable trap for the pickup and retention of leaves and the like from the floors of swimming pools which is simple in construction and defines a configuration readily adapting it for use in a swimming pool wherein a random movement cleaner is being employed.

It is a further object of this invention to provide a device of the character described, which employs no moving parts and defines a smooth, fixed outer surface over which random movement pool cleaners may pass in an unobstructed manner.

DESCRIPTION OF THE DRAWINGS The above-noted and other objects of this invention will be understood -from the following description taken with reference to the drawings wherein:

FIG. 1 is a perspective view of a portable leaf trap constructed in accordance with the present invention.

FIG. 2 is a plan view ofthe portable leaftrap of FIG. 1.

FIG. 3 is a cross sectional view taken along the line 33 of FIG. 2.

FIG. 4 is a cross sectional side elevational view illustrating.

the portable leaf trap constructed in accordance with the teachings of the present invention being retrieved from the pool floor.

DESCRIPTION OF THE ILLUSTRATED EMBODIMENT Referring now to the drawings, the portable leaf trap constructed in accordance with the present invention is generally designated by the numeral 10. As shown in FIGS. 1-3, the leaf trap is in operating position upon a swimming pool floor 12 centered over the inlet 14 of pool drain line 16.

The leaf trap includes a dome-like housing 18 having an inner surface 20 and a rim 22. Dome-like housing 18 may be fabricated from any suitably 'rigid material; however, it is preferably formed of a transparent material such as plastic for purposes which will be brought out in greater detail below. Perforate means in the form of a screen 24 is affixed to said housing in proximity to rim 22 in any desired manner such as by means of water insoluble adhesives or conventional thermal bonding techniques. The screen 24 is circular in shape, confomiing to the configuration of housing 18 so that the screen and housing inner surface 20 define an interior. In the illustrated embodiment screen 24 is illustrated as being constructed of plastic material (however, it should be understood that any other foraminous material such as wire mesh may be utilized in the construction thereof). The holes defined by screen 24 are large enough to permit the free flow of water therethrough while at the same time being too small to allow the passage therethrough of relatively large objects such as leaves or the like.

A base member 26 extends radially outwardly from housing rim 22 in the manner illustrated. The base member comprises a continuous, thin, flexible element which is disposed completely around the rim and by virtue of its flexibility is adapted to conform to the surface configuration of the swimming pool floor 12. In the illustrated embodiment base member 26 is constructed of a unitary piece of plastic material along with screen 24, said screen and base member being interconnected by means of an integral shoulder 28. Shoulder 28, in addition to providing relative placement between screen 24 and base member 26, lies in communication with inner surface 20 of housing 18 and thus provides an additional location whereby bonding with housing 18 as by means of adhesives, etc., may be effected.

An opening 30 is formed in the side of housing 18 to establish communication between the interior defined by screen 24 and housing inner surface 20 and the outside of said housing. As drain line 16 is opened for the discharge of water from the pool through suction means (not shown) in communication with said drain line, a water current is caused to flow through opening 30 into the interior defined by screen 24 and inner surface 20 and thence through the perforations formed by screen 24 and into the drain line. Leaves or other debris will be swept along by the water current and trapped within the leaf trap interior in an obvious manner. Since base member 26 is in continuous annular abutment with pool floor 12, substantially all water being drained from the pool will have to pass through the opening 30. In the event the leaf trap constructed in accordance with the teachings of the present invention is employed with a swimming pool cleaner of the random movement type referred to above, such cleaner during the operation thereof will have driven the leaves on the pool floor into the immediate vicinity of the trap thereby increasing the efficiency of its leaf pickup operation. A portion of such a swimming pool cleaner is illustrated by means of the dotted lines in FIG. 3. It should be noted that the leaf trap of the present invention presents in entirety a smooth external surface over which the cleaning device may move freely. As previously stated, freedom of movement is necessary for the proper operation of random motion pool cleaners.

The flow of the water current through the leaf trap will tend to maintain the trap in position upon the pool floor. However, it may be desirable to provide additional means for maintaining the trap in position. A preferred approach for accomplish ing this may most readily be seen with reference to FIG. 3 wherein ballast retention means in the form of an inverted cup-shaped element 32 is illustrated as being secured to the interior top of dome-like housing 18. Element 32, which is preferably constructed of a yieldable plastic material, is adapted to be affixed to housing 18 by having the rim thereof snapped into an annular shoulder 34 formed at the top of the housing as shown. Prior to being secured to the housing, however, cup-shaped element 32 will be filled with a suitable ballast material such as lead shot, etc., (not shown) so that additional weight will be imparted to the leaf trap substantially along the center of gravity thereof.

Affixed to screen 24 along the edge thereof and in registry with opening 30 is a lifting element in the form of a hook 36. After completion of the aforedescribed leaf pickup operation, a pole 38 is positioned with its pole hook 40 in hook 36, as in FIG. 4, and the pole is manipulated to exert upwardly directed force on hook 36 to lift the trap from its position over the pool drain line 16. The opening 30 provides free access to the hook 36. As the leaf trap is lifted from the swimming pool floor, the trap, by virtue of the fact that hook 36 is positioned off center with respect to the center of gravity thereof, pivots about the hook so that opening 30 is disposed in an upwardly direction. Leaves and other debris contained within the interior of the trap tend to fall under the influence of gravity and accumulate within the trap interior in the side of the trap opposite opening 30. Since hook 36 projects inwardly toward the center of the trap interior, the pivotal movement of the trap will insure that hook 36 and pole hook 40 remain in engagement during the lifting operation. In the above manner, leaf trap 10 may readily be transported out of the pool without danger that the trap will fall off the pole 38 or that leaves and other debris within the trap interior will fall out of opening 30.

Although only one embodiment of apparatus constructed in accordance with the teachings of the present invention has been illustrated and described, it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the spirit of the invention or from the scope of the appended claims. For example, the bottom of the trap may be solid over about percent of its total surface in the vicinity of aperture to encourage leaves or the like to move to the rear of the trap.

I claim as my invention:

1. A portable leaf trap for use with a swimming pool having a drain and a floor, said trap comprising an integral dome-like housing having a peripheral rim adapted to be disposed at substantially the level of the pool floor in surrounding relation to said drain, said housing having a substantially concave-convex imperforate external surface which is smoothly contoured, whereby a floor cleaning hose of a swimming pool cleaner of the random movement type will not be caught or hung-up by said leaf trap, an opening formed in said housing for the entry of leaves, said opening having a lower end and an upper end, said lower end being located substantially at the level of said rim, said upper end being located a substantial distance below the top of said housing, said opening having a width at its lower end which is substantially greater than the height of said opening, and perforate means attached to the housing forming a bottom wall therefor and defining therewith a closed interior adapted to retain therein the leaves which enter through said opening.

2. The portable leaf trap of claim 1 further comprising a lifting element amazed to the trap at a location whereby access to said lifting element may readily be had through said housing opening.

3. The portable leaf trap of claim 2 wherein said lifting element is positioned offset with respect to the center of gravity of said leaf trap whereby upwardly directed force exerted on said lifting element will cause said leaf trap to pivot about said lifting element under the influence of gravity to cause leaves and the like within said interior to accumulate at a location within said interior remote from said opening.

4. The portable leaf trap of claim 3 wherein said lifting element comprises an inwardly extending hook secured to said perforate means in registry with said opening. 

1. A portable leaf trap for use with a swimming pool having a drain and a floor, said trap comprising an integral dome-like housing having a peripheral rim adapted to be disposed at substantially the level of the pool floor in surrounding relation to said drain, said housing having a substantially concavo-convex imperforate external surface which is smoothly contoured, whereby a floor cleaning hose of a swimming pool cleaner of the random movement type will not be caught or hung-up by said leaf trap, an opening formed in said housing for the entry of leaves, said opening having a lower end and an upper end, said lower end being located substantially at the level of said rim, said upper end being located a substantial distance below the top of said housing, said opening having a width at its lower end which is substantially greater than the height of said opening, and perforate means attached to the housing forming a bottom wall therefor and defining therewith a closed interior adapted to retain therein the leaves which enter through said opening.
 2. The portable leaf trap of claim 1 further comprising a lifting element affixed to the trap at a location whereby access to said lifting element may readily be had through said housing opening.
 3. The portable leaf trap of claim 2 wherein said lifting element is positioned offset with respect to the center of gravity of said leaf trap whereby upwardly directed force exerted on said lifting element will cause said leaf trap to pivot about said lifting element under the influence of gravity to cause leaves and the like within said interior to accumulate at a location within said interior remote from said opening.
 4. The portable leaf trap of claim 3 wherein said lifting element comprises an inwardly extending hook secured to said perforate means in registry with said opening. 